JPS603403Y2

JPS603403Y2 - Clutch/brake drum cooling system

Info

Publication number: JPS603403Y2
Application number: JP14495279U
Authority: JP
Inventors: 晧士田島
Original assignee: Sumitomo Heavy Industries Ltd
Current assignee: Sumitomo Heavy Industries Ltd
Priority date: 1979-10-22
Filing date: 1979-10-22
Publication date: 1985-01-30
Also published as: JPS5662439U

Description

【考案の詳細な説明】この考案は、内周面をクラッチ係合面、外周面をブレー
キ係合面に形威したクラッチ・ブレーキドラムの冷却装
置の改良に関するものである。[Detailed Description of the Invention] This invention relates to an improvement of a cooling device for a clutch/brake drum in which the inner peripheral surface is used as a clutch engagement surface and the outer peripheral surface is used as a brake engagement surface.

油圧クローラクレーン等においては、巻取軸に設けられ
たブレーキドラムは、第１図のように同時に原動軸の回
転を巻取軸に伝達するクラッチドラムを兼用しており、
ドラム主体１′の内周面２′をクラッチバンドの圧接面
またドラム外周面４′をブレーキバンドの圧接面に形威
されている。In hydraulic crawler cranes, etc., the brake drum installed on the take-up shaft also serves as a clutch drum, which simultaneously transmits the rotation of the driving shaft to the take-up shaft, as shown in Figure 1.
The inner peripheral surface 2' of the drum main body 1' is shaped as a pressure contact surface of the clutch band, and the drum outer peripheral surface 4' is shaped as a pressure contact surface of the brake band.

しかしながらこの形式のドラムは、内外両周面が摺擦さ
れ発熱度が高く、特に内周面の摺擦による発熱は、周囲
及び−側を囲まれたドラム主体の内部の空気が、ドラム
主体の外部と対流することが少いためドラム主体の内部
にこもるので、ドラム全体の放熱性が悪く、パケット作
業のように長時間にわたってクラッチおよびブレーキ作
動を繰り返す連続運転を行うような場合は、ドラム主体
の過熱によりクラッチおよびブレーキバンドのライニン
グの層積を招き、ブレーキ性能の低下を生ずる不利があ
る。However, this type of drum generates a high amount of heat due to the rubbing on both the inner and outer circumferential surfaces. In particular, the heat generated by the rubbing on the inner circumferential surface is caused by the air inside the drum itself surrounded by the surroundings and negative side. Since there is little convection with the outside, the heat is trapped inside the drum body, so the drum as a whole has poor heat dissipation.When performing continuous operation in which clutch and brake operations are repeated over a long period of time, such as during packet work, it is necessary to Overheating has the disadvantage of leading to lamination of the linings of the clutch and brake band, resulting in a reduction in braking performance.

この考案は、上記の点を考慮して放熱性の向上を図った
ものであって、この考案の実施例を第２．３図について
説明すると、１は図示しないウィンチドラム等に連設さ
れたドラム主体であって、内周面２をクラッチバンドの
圧接面に形成するとともに、外周面中央部には、等間隔
に立設したアーム３・・・を介してリム４を設け、リム
４の外周面をブレーキバンドの圧接面に形威し、アーム
３・・・間は空気の通路となっている。This invention aims to improve heat dissipation in consideration of the above points, and an embodiment of this invention will be explained with reference to Fig. 2.3. 1 is connected to a winch drum etc. not shown. The main body is a drum, and the inner circumferential surface 2 is formed as the pressure contact surface of the clutch band, and the rim 4 is provided at the center of the outer circumferential surface via arms 3 erected at equal intervals. The outer peripheral surface is shaped like the pressure contact surface of the brake band, and the space between the arms 3 is an air passage.

そしてアーム３・・・間に設けた空気通路に強制的に通
風を行うために、ドラム主体１の外周面両側部には、左
・右傾きを異ならしめて略等間隔に突設した多数の空気
案内羽根５・・・、５・・・を並設した構造となってい
る。In order to forcefully ventilate the air passages provided between the arms 3..., on both sides of the outer peripheral surface of the drum main body 1, there are a large number of air holes protruding at approximately equal intervals with different left and right inclinations. It has a structure in which guide vanes 5..., 5... are arranged in parallel.

この考案は上記の構造となっているためドラム主体１の
回転により空気案内羽根５・・・、５・・・を介してア
ーム３・・・間の空気通路に空気が呼び込まれこの空気
はドラム主体１の一側面からアーム３・・・間に形成さ
れる空気通路を通って他側面へと強制的に通風が行われ
るから、この空気によってドラム主体１を冷却するので
、冷却効果が極めて大でドラム主体が過熱されることが
なく、ドラム主体の過熱によるライニング損傷或はブレ
ーキ、クラッチ性能の低下を防止できるという効果を有
する。Since this device has the above-mentioned structure, air is drawn into the air passage between the arms 3 through the air guide vanes 5, 5, etc. by the rotation of the drum main body 1, and this air is Since ventilation is forced from one side of the drum main body 1 to the other side through the air passage formed between the arms 3..., this air cools the drum main body 1, so the cooling effect is extremely high. With a large drum main body, the main body of the drum is not overheated, and it is possible to prevent damage to the lining or deterioration of brake and clutch performance due to overheating of the drum main body.

[Brief explanation of the drawing]

第１図は従来のクラッチ・ブレーキドラムの要部縦断側
面図、第２図はこの考案の要部縦断側面図、第３図は第
２図の平面図である。１・・・・・・ドラム主体、３・・・・・・アーム、４
・・・・・・リム、５・・・・・・空気案内羽根。FIG. 1 is a longitudinal sectional side view of the main part of a conventional clutch/brake drum, FIG. 2 is a longitudinal sectional side view of the main part of this invention, and FIG. 3 is a plan view of FIG. 2. 1...Drum main body, 3...Arm, 4
...Rim, 5...Air guide vane.

Claims

[Scope of utility model registration request]

The inner circumferential surface 2 of the drum main body 1 is formed into a pressure contact surface of the clutch band, and the rim 4 is attached to the center of the outer circumferential surface via an arm 3.
, an air passage is formed between the arms 3, and the outer circumferential surface of the rim 4 is formed into a pressure contact surface of the brake band, and furthermore, both sides of the outer circumferential surface of the drum main body are made to have different left and right inclinations, A large number of air guide vanes 5 protruding at approximately equal intervals...
, 5... are arranged in parallel.